Python set() Function Explained

The set() function is used to create a set, which is an unordered and unique data structure. The elements in a set can be of any data type, similar to keys in a dictionary but without corresponding values.

The syntax of the set() function is set(iterable), where iterable is an object that can be iterated over, such as a list, tuple, string, etc. The set() function removes duplicate elements from the iterable and creates a set.

“For example,”

my_list = [1, 2, 3, 4, 3, 2, 1]
my_set = set(my_list)
print(my_set)  # 输出：{1, 2, 3, 4}

In addition to using the set() function to create sets, you can also use curly braces {} to represent sets, for example:

my_set = {1, 2, 3, 4}

It is important to note that sets are unordered, so the order of output may vary each time. Sets are mutable and can be modified by methods like add() and remove().